SIMULTANEOUS HαAND SODIUM OBSERVATIONS AT THE KANZELHOEHE SOLAR OBSERVATORY

摘要

At the Kanzelhohe Solar Observatory, Ha images are currently obtained simultaneously with sets of intensity, velocity and longitudinal magnetic images in the Sodium D lines. Many flares have been detected. The preliminary results of the analysis suggest the events to occur at heights in the solar atmosphere below 1100 km, where the canopy magnetic lines stressed by the pho-tospheric motions can reconnect. The penetration of the downflowing plasma jets is investigated in order to justify the solar background in the photospheric intensity-velocity phase spectrum.